uhhh ... nobody wants to b/3b the flop all in?.... if AK is out of his range and he does end up having the A of spades ... you are ahead. albeit not by much but if you factor in the times that he has a mid pair that he will checkraise but fold to a jam, it makes the play very profitable ... even if he does get it in w/ a mid pp, you are a favorite w/ 2 overs, 2nd NFD and gutshot.